JEE MAIN - Chemistry (2022 - 29th July Morning Shift - No. 3)
The first ionization enthalpy of Na, Mg and Si, respectively, are : 496, 737 and $$786 \mathrm{~kJ} \mathrm{~mol}^{-1}$$. The first ionization enthalpy ($$\mathrm{kJ} \,\mathrm{mol}^{-1}$$) of $$\mathrm{Al}$$ is :
487
768
577
856
Explanation
I.E. $\mathrm{Na}<\mathrm{Al}<\mathrm{Mg}<\mathrm{Si}$
$\because 496<$ I.E. (Al) $<737$
Option (C), matches the condition
i.e. I.E. $(\mathrm{Al})=577 \mathrm{~kJ} \mathrm{~mol}^{-1}$
$\because 496<$ I.E. (Al) $<737$
Option (C), matches the condition
i.e. I.E. $(\mathrm{Al})=577 \mathrm{~kJ} \mathrm{~mol}^{-1}$
Comments (0)
